Detectionhightest
Potential Persistence Via LSA Extensions
Detects when an attacker modifies the "REG_MULTI_SZ" value named "Extensions" to include a custom DLL to achieve persistence via lsass. The "Extensions" list contains filenames of DLLs being automatically loaded by lsass.exe. Each DLL has its InitializeLsaExtension() method called after loading.
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Nasreddine Bencherchali (Nextron Systems)Created Thu Jul 21Updated Thu Aug 1741f6531d-af6e-4c6e-918f-b946f2b85a36windows
Log Source
WindowsRegistry Set
ProductWindows← raw: windows
CategoryRegistry Set← raw: registry_set
Detection Logic
Detection Logic1 selector
detection:
selection:
TargetObject|contains: '\SYSTEM\CurrentControlSet\Control\LsaExtensionConfig\LsaSrv\Extensions'
condition: selectionFalse Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
MITRE ATT&CK
Tactics
Rule Metadata
Rule ID
41f6531d-af6e-4c6e-918f-b946f2b85a36
Status
test
Level
high
Type
Detection
Created
Thu Jul 21
Modified
Thu Aug 17
Path
rules/windows/registry/registry_set/registry_set_persistence_lsa_extension.yml
Raw Tags
attack.persistence